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The County of DuPage
Wheaton, Illinois

Job Details for 3242 - Chemist

Job Description

GRADE: 212

Under general supervision; performs work of considerable difficulty in collecting samples, analysis of water and sewage samples; runs test methods and associated instrumentation; follows established protocol and requirements; performs related work as required.

An employee in this class performs technical laboratory analyses of plant, industrial and sludge samples. Employees in this class are independently responsible for maintenance and calibration of equipment and validity of results. Anomalies in data or significant equipment breakdowns are recognized and resolved. Work is performed independently under the direction of the Chief Chemist.

The list of duties and responsibilities is illustrative only, and is not a comprehensive listing of all the duties and responsibilities performed by positions in this class.

• Analyzes raw sewage, influent/effluent, sludge and other samples as outlined by environmental protection regulations and standards
• Conducts testing for ammonia, suspended solids, pH, and BOD
• Performs microbiological testing on sludge samples
• Conducts field sampling of rivers, sewers, and ground water wells as needed
• Operates laboratory equipment including pH meter, dissolved oxygen meter, spectrophotometer and specific ion electrode in performing analyses
• Maintains, calibrates, and troubleshoots laboratory equipment
• Accurately records and validates data on samples following regulations and quality assurance protocols
• Prepares and maintains routine reports and records
• Trains and oversees laboratory work of plant operators and temporary help
• On-call for emergency testing such as storm events
• Maintains regular attendance and punctuality

• Adjusts work assignments and schedules in the event of an emergency to participate in emergency preparedness, response, and recovery activities as assigned.
• Depending on assignment may maintain required emergency management training, licensure and/or certifications.
• Performs related duties as required or assigned within the job classification.

To perform this job successfully, an individual must be able to perform each essential duty satisfactorily. The requirements listed below are representative of the knowledge, skill, and /or ability required. Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.

Knowledge of:
• Standard laboratory operating procedures, equipment and standards
• Chemicals used in performing analyses
• Common wastewater laboratory analyses (BOD, SS, pH, NH3)
• Environmental protection regulations and standards applicable to sewage programs
• Current office practices, procedures and equipment
• Computer hardware and software including word processing, spreadsheets, databases, email, etc
• Applicable federal, state, and local laws, rules, regulations, codes, and/or statutes
Skill in:
• Conducting laboratory tests, data collection and analyses
• Performing calculations and report preparation
• Operating and properly maintaining equipment
• Dealing effectively with others
• Using computer hardware and software including word processing, spreadsheets, databases, email, etc
• Applying an acquired knowledge of procedures, rules, regulations and services applicable to the assigned office

Ability to:
• Ability to perform routine laboratory analysis and testing techniques
• Using applicable tools and equipment related to area of assignment
• Oversees and trains employees
• Operate modern office equipment
• Manage projects and multiple priorities simultaneously
• Establish and maintain effective working relationships with department and division staff, other departments and others, such as vendors
• Communicate and use interpersonal skills to interact with coworkers, supervisor, the general public, etc. to sufficiently exchange or convey information and to receive work direction
• Ensure compliance with applicable federal, state, and local laws, rules, and regulations and statutory requirements
• Convey excellent oral and written communication
• Work effectively under stress


Bachelor’s degree in Chemistry or Environmental Sciences and four years of experience as a laboratory technician; or, an equivalent combination of education and experience sufficient to successfully perform the essential duties of the job such as those listed above.

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of the job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

Light Work: Exerting up to 50 pounds of force occasionally and /or up to 25 pounds of force frequently and the use of arm and /or leg controls require exertion of forces greater than for sedentary work. The employee spends a majority of the time either standing or walking.

Employees must have the ability to distinguish color.
The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions.

The work will occur in an office and field environment, including working with rivers and sewers. While performing the duties and responsibilities the employee may be exposed to loud noise, noxious odors, unsanitary conditions, chemicals, electricity, moving mechanical parts, varying weather conditions, and other related conditions and situations.

This position requires a valid Illinois Driver's License.